Reversing engine control means



H. W. SUMNER. REVERSING ENGINE CONTROL MEANS.

APPLlCATlON FILED JULY 3,1918.

Patented Nov. 15, 1921.

2 SHEETSSHEET I.

Henry W;

Ema/44 501 2 SHEETSSHEET 2 Henry WEurnner.

Patented Nov. 15, 1921 H W SUMNER REVERSINGENGIN E comm MEANS. Q

APPLICATION FILED JULY 3 1918 HENRY W. SUMNER, 0F SEATTLE, WASHINGTON.

REVERSING ENGINE CONTROL MEANS. 7

Specification of Letters Patent.

Patented No'v.15,1921.

Application filed Jul 3, 1918. Serial No. 243,214..

To all whom it may concern:

Be it known that I, HENRY W. SUMNER, a citizen of the United States, and resident of the city of Seattle, county of King, and State of Washington, have invented certain new and useful Improvements in Reversing Engine Control Means, of which the following is a specification.

My invention relates to internal combustion engines and more particularly to the means employed for actuation of the fuel feeding mechanisms and has for one of its prime objects, the provision of an actuating mechanism of this sort which will properly function for operation of the engine in reverse directions, without requiring any adjustment and in which an adjustment of the point of injection, or the lead, may be secured and this will remain constant and not be disturbed when the direction of turning of the engine is reversed; Another feature which is included in my invention is the provision of improved means for adjusting' the lead, or the angular position of the point of injection of the fuel, relative to the dead center.

A further feature of my invention is an improved mechanism whereby the amount of fuel injected at a charge may be controlled by a governor and at the same time the size of the maximum charge may be controlled by a prior hand adjustment.

The features of the device as illustrated and described which I consider to be new and upon which I desire patent will be specifically pointed out by the claims.

In the accompanying drawings I have shown a preferred form of construction for this invention and will specifically describe the same thereby pointing out the principles involved in my invention.

Figure 1 is a plan View of the parts by which I carry out my invention.

Fig. 2 is an end view or elevation of the same parts.

Fig. 3 illustrates a type of feed actuatlng means which operates to advantage with my device.

My invention is intended for use with a feed actuating mechanism ofa type which will act alike with the engine turning in either direction. Such a device is shown in Fig. 3 in which 1 represents a shaft which is turned in conformity with the engine shaft, 10 a collar secured to this shaft and 11 a tappet wheel carried by this collar.

12 represents a lever having a roller 13,

which lever is an actuating member of the fuel feeding mechanism.

Such a device may be designed to actuate the fuel feed or injection mechanism in like time relationship with the dead center of the engine, irrespective of the direction of turning. Any type of actuating mechanism by gvhich this result can be secured may be use The shaft 1 has a sleeve 4 mounted to turn therewith but movable freely within a limited range lengthwise thereof, as by a key and feather, as has been indicated at 40, Fig. 1. Means are provided whereby the position of this sleeve lengthwise of the shaft maybe manually controlled. The means illustrated includes flanges 41 upon the sleevewhich forms a groove in which is placed a half ring 43 which has pivot axes 47 which enter notches or slots. formed in the upper ends of the arms 44. These arms are connected together, as by a hub or sleeve 48. A bolt 49 and a clamping nut 46 permit adjustment when desired and locking when in adjusted position. For convenience in adjustment a handle 45 is provided.

One end of the sleeve 4 has a V-shaped notch forming inclined radially positioned surfaces 31 and the shaft?) has a pin 30 adapted to contact with the inclined surfaces 31 tothereby turn the sleeve.- The shafts l and 3 are alined, with ends abutting at 32, but are rotatively connected only through pin 30 and sleeve 4. If the sleeve is positioned upon the shafts so that the pin 30 is at the bottom of the notch, there is no slack or lost motion in the connection between the shafts, while if the pin contacts with the surfaces 31 at a point away from the apex of this notch, then the driven shaft 1 lags a certain angular amount behind the driving shaft 3 and there isan amount of lost motion when reversal occurs which is greater as the pin is removed from the apex of the notch. With the sides of the notch symmetrical with reference to an axial plane passing through this apex, the lag between the two shafts 1 and 3 will be the same whichever way they are turned. Because of this and the like condition in the feed actuating mechanism shown in Fig. 3, the adjustment of the feed supply is not disturbed by reversal of the engine.

The short shaft 3 may be driven in any suitable way from the engine. Its rate of turning should conform to that of the engine in such a ratio as is required by the number of fuel injections per revolution required. As herein shown, it is turned through the spiral gears 5 and 50 from the shaft 51, which shaft 51 is driven from the engine shaft. 7

The shaft 2 is a shaft which controls the fuel feeding mechanism so as to vary the amount of fuel supplied by. each injection. The mechanism employed for securing this variation may be anything found suitable. Such control is secured by controlling the angular position of the shaft 2.

In Fig. 2 is shown one form for doing this, which I now prefer touse. The particular construction of such mechanism is, however, not the essential feature of my invention, but is, to a certain extent, immaterial.

In the illustrated mechanism, 27 is the stem or piston rod of an oil feed pump. This is held upward by a spring 28 and has a head 26 in which is journale'd a roller 25. An actuating lever 24; is pivoted at 23 to a block 22 which is mounted to slide on a guide bar 29. The bar 24: is oscillated on its fulcrum 23 through the action of any suitable cam device carried by the shaft '1. One form of such device which may be employed is shown in Fig. 3.

in Fi 2: Y b

- pairs.

The extent of movement of the pump piston rod 27 and therefore the amount of fuel oil injected, will vary in. accordance with the position of the fulcrum 23, and this is controlled through the link 21 by the angular position of the arm 20 carried by the shaft 2.

Loosely mounted upon the shaft 2 1s a sleeve 6 which has arms 60 which engage pins or journals 54 carried by a ring member which lies in a slot of a sleeve 52 which sleeve is controlled in vertical position on its shaft 51 through the action of any suitable speed governor, acting through links 53,

Upon the shaft 2 is fixedly secured a collar or sleeve 7, which has segmental ears or lugs and 71 projecting at respectively opposite ends. The sleeve 6 has a complemental segmental projection 61 which has one. of its side faces normally contacting with a side face of the projection 71. The angular extent of the two contacting ears or lugs is enough less than 360 to leave a material amount of slack, as is shown at 72 The ears or lugs 80, 61, 70, 71, may be any kind of projection which are mounted upon their respective parts so as to swing in paths which will cause them to contact in The shaft 2 is "yieldingly acted upon, as by a spring or weight, not shown, so as .to

hold the facesof the ears 61 and 71 in of mechanism the same being the form' contact, of the kind shown in Figs. 1 and 2. In consequence adjustment of the governing lever 45 controls the angular position of shaft 2 and therefore the position of the fulcrum or pivot 23 and thereby the extent of reciprocation of the fuel feeding or injection pump and the amount of fuel delivered to the engine cylinders.

Mounted loosely upon the shaft 2 is a sleeve 8 which has a lug or ear 80 which cooperates with the lug 70 of sleeve 7, in exactly analogous manner to the action of lugs or cars 61 and 71. In this case, however, the contacting faces of the lugs face, so that these lugs or ears act'to limit the return movement of the shaft. This limits the return movement of the oil feed pump and therefore establishes a maximum delivery capacity which may be less than the maximum capacity of the pump. The sleeve 8 is loose on the shaft 2 and its angular position thereon is controlled through a lever 81 and this lever may be secured in adjusted position by any suitable mechanism. That shown consists of a fixed segment bar 82 and a clamping screw 83.

The timing of the fuel injection relative to the point of dead center of the engine, is determined by the position of the pin 30 relative to the line which bisects the angle between the inclined surfaces 31 of sleeve 4a The nearer the pin approaches this line the nearer the fuel injection coincides with the dead center point. The delay in the time of fuel injection after the dead center, corresponds with the separation between this pin and said central line. As the inclined surfaces 31 which determine this separation, are inclined alike at both sides of this line, the delay for which the device has been set, will be the same when the engine is re versed, without requiring any resetting.

What I claim as my invention is:

- 1. An actuating device-for timed parts of internal combustion engines comprising driving and driven parts, one having a gap and the other a projection entering said gap and means for adjusting one of said parts to thereby vary the relative extent of gap and projection and thereby vary the'lag between the driven and the driving parts.

2. The combination with a fuel feed mechanism for oil engines comprising a rotative actuating cam, of a driving meansfor said cam comprising two members, one having angularly placed surfaces and the other a pin-like member adapted to engage either of said angularly placed surfaces.

3. The combination with a fuel feed mechanism for oil engines comprising a rotative actuating cam, of a driving means forsaid cam comprising concentric sleeve and shaft, the sleeve having a notch with its axis extending lengthwise-the sleeve and the other a pin entering said notch.

4. The combination with a fuel feed mechanism for oil engines comprising a rotative actuating cam, of a driving means for said cam comprising two members, one having angularly placed surfaces and the other a pin-like member adapted to engage either of said angularly placed surfaces, and means for adjusting the relative position of said engaging surfaces lengthwise their axis of rotation.

5. The combination with a fuel feed mechanism for oil engines comprising a rotative actuating cam, of a driving means for said cam comprising concentric sleeve and shaft, the sleeve having a notch with its axis paralleling the axis of the sleeve and the shaft a pin entering said notch, and means for securing relative adjustment of said sleeve and pin lengthwise the axis of the sleeve.

6. In a mechanism for supplying fuel to an oil engine, a reversible fuel feed mechanism and an actuative mechanism therefor comprising two co-axial rotative members, a sleeve carried by one of said rotative members and containing a recess having opposed walls oppositely and equally inclined to an axial plane, and a pin carried by the other of said members and entering said recess, and means for axially adjusting the relative position of sleeve and pin.

7. In a mechanism for supplying fuel to an oil engine, a reversible fuel feeding mechanism and an actuative mechanism therefor comprising two co-axial shafts, a sleeve mounted for axial movement upon and to rotate with one shaft, said sleeve having a notch in one end having converging sides placed symmetrically relative to an axial plane, the other shaft having a pin entering said slot.

8. In a mechanism for supplying fuel to an oil engine, a reversible fuel feeding mechanism and an actuative mechanism therefor comprising two co-axial shafts, a sleeve mounted for axial movement upon and to rotate with one shaft, said sleeve having a notch in one end having converging sides placed symmetrically relative to an axial plane, the other shaft having a pin entering said slot, a manually operated lever controlling the position of said sleeve lengthwise the shaft and means for securing said lever in adjusted position.

9. The combination with a fuel supply device comprising an oscillatory shaft, a power actuated means for moving said shaft in fuel delivering direction, a yielding means for actuating said shaft in the return direction, and a manually adjustable stop limit ing the return movement of said shaft.

10. The combination with a fuel supply device comprising an oscillatory shaft, a power actuated means for moving said shaft in fuel delivering direction, a yielding means for actuating said shaft in the return direction, a stop for limiting the return movement of said shaft, and means for controlling the position of said stop from a governor.

11. The combination with a fuel supply device comprising an oscillatory shaft, a power actuated means for moving said shaft in fuel delivering direction, a yielding means for actuating said shaft in the return direction, a second stop for limiting the return movement of said shaft, and means for controlling the position of said second stop from a governor.

Signed at Seattle, Washington.

HENRY W. SUMNER. 

